.btn {
  display: inline-block;
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.sort {
  background: url("./sort.png");
}

.sort-descending {
  background: url("./sort-actived.png");
}

.sort-ascending {
  background: url("./sort-actived.png");
  transform: rotate(180deg);
}
